title: Bis(but-2-enoato-κO)tri-phenyl-bis-muth(V).
abstract: In the title mol-ecule, [Bi(C6H5)3(C4H5O2)2], the Bi(V) atom is in a distorted trigonal-bipyramidal environment with carboxyl-ate O atoms in axial positions and phenyl C atoms in the equatorial plane. The Bi-O bond lengths are 2.283 (3) and 2.309 (2) Å, but as a result of additional long Bi⋯O inter-actions [2.787 (3) and 2.734 (3) Å], one of the C-Bi-C angles is 148.62 (13)°. In the crystal, weak C-H⋯O hydrogen bonds connect pairs of mol-ecules into inversion dimers. These dimers are further connected by weak C-H⋯π inter-actions into chains along [100] .
authors.affiliation: Department of Physics, N. I. Lobachevsky State University of Nizhni Novgorod, 603950, pr. Gagarina, 23-3 Nizhni Novgorod, Russia.
authors.forename: Pavel V
authors.initials: PV
authors.lastname: Andreev
authors.forename: Nikolay V
authors.initials: NV
authors.lastname: Somov
authors.forename: Olga S
authors.initials: OS
authors.lastname: Kalistratova
authors.forename: Alexey V
authors.initials: AV
authors.lastname: Gushchin
authors.forename: Evgeny V
authors.initials: EV
authors.lastname: Chuprunov